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Dear all, <br>
<br>
The last question by Michael Jorgensen brings up an issue discussed
during our recent 'Big Bale Building Basics' workshop. An issue
which none of us were able to answer satisfactory, and which we'd
appreciate input on.<br>
<br>
As we cut through some of the big bales (70x120x1900), (which we
stacked on edge) it was evident that the individual straws was
extremely compressed, much like what you see when you cut in some of
the 'Stramit' panels (in CZ: 'Ecopanely' ). It's visual in this
album:<a moz-do-not-send="true" class="ecxmoz-txt-link-freetext"
href="https://picasaweb.google.com/permamax/BBBB2BigBaleBuildingBasics?authuser=0&feat=directlink"
target="_blank">
https://picasaweb.google.com/permamax/BBBB2BigBaleBuildingBasics?authuser=0&feat=directlink</a><br>
<br>
We deducted that a BB gives less insulation per cm3 than small bales
(but as it's thiker it's fine), however also less air movement.
Question is what how the real parameters look like? It also brought
up the issue of diffusion when building with big bales to passive
house standards. A concern was that a BB wall would need a moisture
break membrane due in order to ensure the condensation point didn't
occur within the bale<br>
<br>
This is all well beyond my humble knowledge... Any rocket scientists
out there?<br>
<br>
Cheers,<br>
Max<br>
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<pre wrap="">In your experience will bigbales have a relatively better insulation
effect than the small traditional ones. My thoughts are that they
are very heavily tightened and there the free floating air inside is
less than in the small bales (relatively). Am I wrong? What do you
recommend and what do you use yourself?
Michael M. Joergensen
Om Kaeret 4A
DK- 2800 Lyngby
<a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://g.co/maps/ff6pp">http://g.co/maps/ff6pp</a>
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<br>
<pre class="moz-signature" cols="72">--
Ing. Max Vittrup Jensen
"Jen-Sen: Make it Reality"
Consultancy in sustainable engineering, planning and environment
+420 585 15 20 10 - <a class="moz-txt-link-abbreviated" href="http://www.jen-sen.cz">www.jen-sen.cz</a> </pre>
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